// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 25.2
description: >
    When an iterator is the operand of a `yield *` expression, the generator
    should produce an iterator that visits each iterated item.
features: [generators, Symbol.iterator]
---*/

function Test() {
    var results = [{ value: 1 }, { value: 8 }, { value: 34, done: true }];
    var idx = 0;
    var iterator = {};
    var iterable = {
      next: function() {
        var result = results[idx];
        idx += 1;
        return result;
      }
    };
    iterator[Symbol.iterator] = function() {
      return iterable;
    };
    function* g() {
      yield* iterator;
    }
    var iter = g();
    var result;

    result = iter.next();
    assert.sameValue(result.value, 1, 'First result `value`');
    assert.sameValue(result.done, undefined, 'First result `done` flag');

    result = iter.next();
    assert.sameValue(result.value, 8, 'Third result `value`');
    assert.sameValue(result.done, undefined, 'Third result `done` flag');

    result = iter.next();
    assert.sameValue(result.value, undefined, 'Final result `value`');
    assert.sameValue(result.done, true, 'Final result `done` flag');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
